多睡一小时能有多大用？
<p><span word="Dr">Dr</span> <span word="Michael">Michael</span> <span word="Mosley">Mosley</span> <span word="takes">takes</span> <span word="part">part</span> <span word="in">in</span> <span word="a">a</span> <span word="sleep">sleep</span> <span word="study">study</span> </p><p><span word="The">The</span> <span word="average">average</span> <span word="Briton">Briton</span> <span word="gets">gets</span> <span word="six">six</span>-<span word="and">and</span>-<span word="a">a</span>-<span word="half">half</span> <span word="hours">hours</span>' <span word="sleep">sleep</span> <span word="a">a</span> <span word="night">night</span>, <span word="according">according</span> <span word="to">to</span> <span word="the">the</span> <span word="Sleep">Sleep</span> <span word="Council">Council</span>. <span word="Michael">Michael</span> <span word="Mosley">Mosley</span> <span word="took">took</span> <span word="part">part</span> <span word="in">in</span> <span word="an">an</span> <span word="unusual">unusual</span> <span word="experiment">experiment</span> <span word="to">to</span> <span word="see">see</span> <span word="if">if</span> <span word="this">this</span> <span word="is">is</span> <span word="enough">enough</span>.</p><p><span word="It">It</span> <span word="has">has</span> <span word="been">been</span> <span word="known">known</span> <span word="for">for</span> <span word="some">some</span> <span word="time">time</span> <span word="that">that</span> <span word="the">the</span> <span word="amount">amount</span> <span word="of">of</span> <span word="sleep">sleep</span> <span word="people">people</span> <span word="get">get</span> <span word="has">has</span>, <span word="on">on</span> <span word="average">average</span>, <span word="declined">declined</span> <span word="over">over</span> <span word="the">the</span> <span word="years">years</span>.</p><p><span word="This">This</span> <span word="has">has</span> <span word="happened">happened</span> <span word="for">for</span> <span word="a">a</span> <span word="whole">whole</span> <span word="range">range</span> <span word="of">of</span> <span word="reasons">reasons</span>, <span word="not">not</span> <span word="least">least</span> <span word="because">because</span> <span word="we">we</span> <span word="live">live</span> <span word="in">in</span> <span word="a">a</span> <span word="culture">culture</span> <span word="where">where</span> <span word="people">people</span> <span word="are">are</span> <span word="encouraged">encouraged</span> <span word="to">to</span> <span word="think">think</span> <span word="of">of</span> <span word="sleep">sleep</span> <span word="as">as</span> <span word="a">a</span> <span word="luxury">luxury</span> - <span word="something">something</span> <span word="you">you</span> <span word="can">can</span> <span word="easily">easily</span> <span word="cut">cut</span> <span word="back">back</span> <span word="on">on</span>. <span word="After">After</span> <span word="all">all</span>, <span word="that">that</span>'<span word="s">s</span> <span word="what">what</span> <span word="caffeine">caffeine</span> <span word="is">is</span> <span word="for">for</span> - <span word="to">to</span> <span word="jolt">jolt</span> <span word="you">you</span> <span word="back">back</span> <span word="into">into</span> <span word="life">life</span>. <span word="But">But</span> <span word="while">while</span> <span word="the">the</span> <span word="average">average</span> <span word="amount">amount</span> <span word="of">of</span> <span word="sleep">sleep</span> <span word="we">we</span> <span word="are">are</span> <span word="getting">getting</span> <span word="has">has</span> <span word="fallen">fallen</span>, <span word="rates">rates</span> <span word="of">of</span> <span word="obesity">obesity</span> <span word="and">and</span> <span word="diabetes">diabetes</span> <span word="have">have</span> <span word="soared">soared</span>. <span word="Could">Could</span> <span word="the">the</span> <span word="two">two</span> <span word="be">be</span> <span word="connected">connected</span>?</p><p><span word="We">We</span> <span word="wanted">wanted</span> <span word="to">to</span> <span word="see">see</span> <span word="what">what</span> <span word="the">the</span> <span word="effect">effect</span> <span word="would">would</span> <span word="be">be</span> <span word="of">of</span> <span word="increasing">increasing</span> <span word="average">average</span> <span word="sleep">sleep</span> <span word="by">by</span> <span word="just">just</span> <span word="one">one</span> <span word="hour">hour</span>. <span word="So">So</span> <span word="we">we</span> <span word="asked">asked</span> <span word="seven">seven</span> <span word="volunteers">volunteers</span>, <span word="who">who</span> <span word="normally">normally</span> <span word="sleep">sleep</span> <span word="anywhere">anywhere</span> <span word="between">between</span> <span word="six">six</span> <span word="and">and</span> <span word="nine">nine</span> <span word="hours">hours</span>, <span word="to">to</span> <span word="be">be</span> <span word="studied">studied</span> <span word="at">at</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Surrey">Surrey</span>'<span word="s">s</span> <span word="Sleep">Sleep</span> <span word="Research">Research</span> <span word="Centre">Centre</span>.</p><p><span word="The">The</span> <span word="volunteers">volunteers</span> <span word="were">were</span> <span word="randomly">randomly</span> <span word="allocated">allocated</span> <span word="to">to</span> <span word="two">two</span> <span word="groups">groups</span>. <span word="One">One</span> <span word="group">group</span> <span word="was">was</span> <span word="asked">asked</span> <span word="to">to</span> <span word="sleep">sleep</span> <span word="for">for</span> <span word="six">six</span>-<span word="and">and</span>-<span word="a">a</span>-<span word="half">half</span> <span word="hours">hours</span> <span word="a">a</span> <span word="night">night</span>, <span word="the">the</span> <span word="other">other</span> <span word="got">got</span> <span word="seven">seven</span>-<span word="and">and</span>-<span word="a">a</span>-<span word="half">half</span> <span word="hours">hours</span>. <span word="After">After</span> <span word="a">a</span> <span word="week">week</span> <span word="the">the</span> <span word="researchers">researchers</span> <span word="took">took</span> <span word="blood">blood</span> <span word="tests">tests</span> <span word="and">and</span> <span word="the">the</span> <span word="volunteers">volunteers</span> <span word="were">were</span> <span word="asked">asked</span> <span word="to">to</span> <span word="switch">switch</span> <span word="sleep">sleep</span> <span word="patterns">patterns</span>. <span word="The">The</span> <span word="group">group</span> <span word="that">that</span> <span word="had">had</span> <span word="been">been</span> <span word="sleeping">sleeping</span> <span word="six">six</span>-<span word="and">and</span>-<span word="a">a</span>-<span word="half">half</span> <span word="hours">hours</span> <span word="got">got</span> <span word="an">an</span> <span word="extra">extra</span> <span word="hour">hour</span>, <span word="the">the</span> <span word="other">other</span> <span word="group">group</span> <span word="slept">slept</span> <span word="an">an</span> <span word="hour">hour</span> <span word="less">less</span>.</p><p><span word="While">While</span> <span word="we">we</span> <span word="were">were</span> <span word="waiting">waiting</span> <span word="to">to</span> <span word="see">see</span> <span word="what">what</span> <span word="effect">effect</span> <span word="this">this</span> <span word="would">would</span> <span word="have">have</span>, <span word="I">I</span> <span word="went">went</span> <span word="to">to</span> <span word="the">the</span> <span word="John">John</span> <span word="Radcliffe">Radcliffe</span> <span word="hospital">hospital</span> <span word="in">in</span> <span word="Oxford">Oxford</span> <span word="to">to</span> <span word="learn">learn</span> <span word="more">more</span> <span word="about">about</span> <span word="what">what</span> <span word="actually">actually</span> <span word="happens">happens</span> <span word="when">when</span> <span word="we">we</span> <span word="sleep">sleep</span>.</p>
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